Design of a motion sensor-based warning system to prevent child abandonment in buses

In recent years, the use of public transportation has significantly increased to accommodate growing travel demands, particularly in urban areas. Consequently, incidents involving children being unintentionally left behind in vehicles have occurred with greater frequency, raising serious safety concerns. This situation underscores the urgent need for the development of a reliable and effective preventive system. The present study proposes the design and implementation of an intelligent warning system that utilizes motion sensors to detect the presence of children inside vehicles. Upon detecting a child after the engine has been turned off, the system activates an audible alarm to alert nearby individuals and simultaneously transmits warning messages to the driver’s and parents’ mobile devices. The proposed system is developed based on key criteria including ease of installation and use, cost-effectiveness, and potential for large-scale deployment.